New wsrep_reject_queries has been implemented that can be used to reject queries for that node. This can be useful if someone wants to manually run maintenance on the node like mysqldump without need to change the settings on the load balancer.

XtraBackup SST now supports innodb_data_home_dir and innodb_log_home_dir in the configuration file with sst_special_dirs option.

New wsrep_local_cached_downto status variable has been introduced. This variable shows the lowest sequence number in gcache. This information can be helpful with determining IST and/or SST.

Garbd init script and configuration files have been packaged for CentOS and Debian, in addition, in Debiangarbd is packaged separately in percona-xtradb-cluster-garbd-3.x package.

Bugs Fixed:

When grastate.dat file was not getting zeroed appropriately it would lead to RBR error during the IST. Bug fixed #1180791.

init stop script on CentOS didn’t wait for the server to be fully stopped. This would cause unsuccessful server restart because the start action would fail because the daemon would still be running. Bug fixed #1254153.

DELETE FROM statement (without WHERE clause) would crash slaves if master did not have binlogging enabled. Bug fixed #1254179.

Note: On CentOS 5/6, those who may have installed deprecated percona-xtrabackup-20 with Percona XtraDB Cluster 5.6 due to bug #1226185, the upgrade may fail, the dependency issue has been fixed since then, hence replace percona-xtrabackup-20 with percona-xtrabackup before upgrade.